pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-23559-4113_Sir_George_Mackenzies_Reel.ps) >>/Users/jc/w/tmp/Tune-23559-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Gow/CSR/4113_Sir_George_Mackenzies_Reel.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-23559-4113_Sir_George_Mackenzies_Reel.abc 884 ABC music file with the extracted tune(s)
Tune-23559-4113_Sir_George_Mackenzies_Reel.ps 37409 PostScript
Tune-23559-4113_Sir_George_Mackenzies_Reel.txt 884 Plain-text file with the extracted tune(s)
Tune-23559-get.log 8884 Log file, useful mostly for debugging
These files should be available for 24 hours.